Linear displacement sensing assembly and joint rehabilitation training device thereof

Abstract

The invention discloses a linear displacement sensing assembly and a joint rehabilitation training device thereof, and belongs to the field of rehabilitation training, the linear displacement sensing assembly is used for rehabilitation, a sliding sleeve and a fixed vertical plate are arranged in a sliding mode, the fixed vertical plate is provided with a resistance groove body with a sliding resistance layer, the sliding sleeve is provided with a conductive elastic piece, and the conductive elastic piece is connected with a PCB and a controller through electric signals; sleeve guide blocks are arranged on the two sides of the sliding sleeve, vertical plate guide grooves are formed in the positions, corresponding to the sleeve guide blocks, of the fixed vertical plate, vertical plate guide rods sleeved with springs are arranged in the vertical plate guide grooves, block guide holes corresponding to the vertical plate guide rods are machined in the sleeve guide blocks, and the block guide holes and the vertical plate guide rods are connected in an inserted mode and slide relative to each other. Rehabilitation training of the lower limb knee joint can be achieved, the exercise amount can be visually displayed and counted, rehabilitation training of the knee joint is facilitated, and the training result and quality are improved.

Description

Technical Field

[0001] This application belongs to the field of rehabilitation training devices, and more specifically, relates to a linear displacement sensing component and a joint rehabilitation training device thereof. Background Technology

[0002] To assess or rehabilitate a patient's lower limb motor function, specialized equipment is required. For example, Chinese Patent Publication No. CN120167950A discloses an array-type pneumatic contact lower limb motor function assessment device, specifically disclosing the following technical solution: It includes a base, an adjustable seat on top of the base, a fixed base fixedly connected to the top of the base, an auxiliary mechanism on top of the fixed base, and an assessment mechanism on top of the base. The assessment mechanism includes mounting boxes, with the bottoms of two mounting boxes fixedly connected to the top of the base. Each mounting box contains a follower assembly, the other end of which is rotatably connected to a fixing ring. Both ends of the fixing ring are secured with Velcro, and multiple air cylinders are fixedly connected inside the fixing ring.

[0003] Meanwhile, in the prior art, a lower limb rehabilitation training system with signal feedback and its control method are also disclosed. See Chinese Patent Publication No. CN120305096A, which specifically discloses the following technical solution: including: a control module, a pressure sensor, an angle sensor, an electromyography sensor, a display terminal, an electrical stimulation module, and an execution module. The control module is connected to the pressure sensor, the angle sensor, the electromyography sensor, the display terminal, the electrical stimulation module, and the execution module respectively. One end of the pressure sensor is fixedly connected to the knee joint mechanism, and the other end is connected to the execution mechanism through a transmission mechanism. The angle sensor is set at the turning point of the knee joint mechanism, and the electromyography sensor is arranged on the surface of the lower limb muscles.

[0004] However, the applicant believes that the mechanical structure of the lower limb joint rehabilitation training equipment still needs to be improved to further ensure the stability of the mechanical structure's movement, while monitoring and limiting the amount of movement of the mechanical structure in one direction in order to monitor the amount of movement of the lower limb joints. There is still room for improvement so that the amount of movement can be displayed and statistically analyzed intuitively, and so as to facilitate the rehabilitation training of the lower limb knee joint. Summary of the Invention

[0005] The purpose of this application is to provide a linear displacement sensing component and its joint rehabilitation training device, which can realize the rehabilitation training of the lower limb knee joint and can intuitively display and statistically analyze the amount of exercise, which is helpful for the rehabilitation training of the knee joint and improves the training results and quality.

[0006] To achieve the above objectives, this application employs the following technical solution: The linear displacement sensing component described in this application includes a sliding sleeve and a fixed plate. The sliding sleeve has a sleeve receiving cavity for the fixed plate to be inserted into and slide relative to it. Resistor grooves are symmetrically arranged on both sides of the fixed plate. A sliding resistor layer is embedded in each resistor groove. A conductive spring is provided on the sliding sleeve at the position corresponding to the sliding resistor layer. The conductive spring is connected to a PCB board via an electrical signal, and the PCB board is connected to a controller via an electrical signal. The conductive spring is located at the bottom end of the sliding sleeve. Sleeve guide blocks are provided on both sides of the sliding sleeve. The fixed plate has plate guide grooves on both sides corresponding to the sleeve guide blocks. A plate guide rod with a spring is provided in each plate guide groove. A block guide hole corresponding to the plate guide rod is machined on the sleeve guide block. The block guide hole is inserted into and slides relative to the plate guide rod.

[0007] As one of the preferred technical solutions, in this application, the fixed upright plate has several slider placement slots between adjacent resistor grooves on the same side. A pressing slider is placed in the slider placement slot. Two conductive contact blocks and a slider spring are provided between the pressing slider and the slider placement slot. The pressing slider has a metal conductive plate connecting the two conductive contact blocks. The conductive contact blocks are respectively connected to the corresponding conductive pillars through wires. The top of the conductive pillar extends from the top of the fixed upright plate. The conductive pillar is connected to the PCB board through an electrical signal. The conductive pillar is composed of multiple fixed resistor structures connected in series.

[0008] As one of the preferred technical solutions, in this application, the pressing slider is machined with a slider inclined surface, the pressing slider cooperates with the slider pushing block through the slider inclined surface, the slider pushing block is located at the inlet end of the slider receiving groove, and the slider receiving groove is located on the sliding sleeve and is correspondingly set with the pressing slider.

[0009] The joint rehabilitation training device described in this application, equipped with the linear displacement sensing component, includes a pair of top plate support seats, a support seat connecting plate between adjacent top plate support seats, a top plate connected to the top of each top plate support seat and arranged parallel to the support seat connecting plate, a sliding seat on each top plate, a rectangular notch on the top plate in the sliding direction of the sliding seat, a movable pedal below the rectangular notch, the movable pedal being located on the movable connecting plate, two ends of the movable connecting plate being slidably disposed in the top plate support seats, a vertical linkage rod being disposed within the top plate support seats and slidably contacting the two ends of the movable connecting plate, the vertical linkage rod being located on a linkage rod sliding plate, the linkage rod sliding plate being connected to a support seat guide component; a pulley seat being slidably contacted at the bottom of the movable connecting plate, the pulley seat being located at the top of the linear displacement sensing component, the bottom of the linear displacement sensing component being located on the support seat connecting plate.

[0010] As one of the preferred technical solutions, in this application, a wheel seat contact plate is fixedly provided parallel to the bottom end of the movable connecting plate. The length of the wheel seat contact plate is lower than that of the movable connecting plate and there is a distance between it and the top plate support seat at both ends for the movable connecting plate to move. The movable connecting plate slides in contact with the pulley seat body through the wheel seat contact plate. The pulley seat body includes a wheel and a seat body.

[0011] As one of the preferred technical solutions, in this application, the support base connecting plates on both sides of the linear displacement sensing component are provided with reset guide cylinders. The reset guide cylinder includes a cylinder body, and a reset spring and a cylinder push rod are provided inside the cylinder body. One end of the cylinder push rod is inserted into the inside of the cylinder body and connected to the reset spring, and the other end of the cylinder push rod is connected to the pulley seat body.

[0012] As one of the preferred technical solutions, in this application, the wheel seat contact plate is fixedly connected to an anti-collision connecting plate at one end in the forward direction, the anti-collision connecting plate is connected to an anti-collision rod through a nut structure, the anti-collision rod extends away from the wheel seat contact plate and is fixedly connected to an anti-collision plate; the top plate is provided with a limit tail plate below the tail.

[0013] As a preferred technical solution, in this application, the top plate support includes a support base plate, on which four support plate uprights are provided. The support plate uprights are located on both sides of the movable connecting plate and are in slidable contact with the movable connecting plate. The support plate uprights are machined with support guide holes formed by strip-shaped through holes. A vertical linkage rod is slidably disposed in the support guide hole. The two ends of the vertical linkage rod extend from the support guide hole and are connected to the linkage rod slide plate. The vertical linkage rod and the linkage rod slide plate are slidably provided with guide slide rods. A guide return spring is sleeved on the guide slide rod between the linkage rod slide plate and the support base plate. The guide return spring and the guide slide rod constitute the support guide assembly. The two sides of the linkage rod slide plate are slidably disposed on the support slide rail, which is located on both sides of the support guide hole of the support plate upright.

[0014] As one of the preferred technical solutions, in this application, horizontal slide rods are slidably arranged on both sides of the slide block, and a slide block slider is provided at the slide block outside the horizontal slide rods. The slide block is slidably arranged on the horizontal slide rail through the slide block slider. The two ends of the horizontal slide rods and the horizontal slide rail are respectively fixedly connected to the top first plate and the top tail plate at the corresponding positions. A slide block backing plate is provided on the slide block.

[0015] Compared with the prior art, the beneficial effects of this application are: 1. This application, through the cooperation of a linear displacement sensing component, achieves integration with a joint rehabilitation training device, enabling statistical analysis and intuitive observation of the amount of exercise during lower limb joint rehabilitation training, thereby ensuring improved rehabilitation training effectiveness.

[0016] 2. This application improves the stability and reliability of the lower limb joint rehabilitation training process by modifying the rehabilitation training device, thereby avoiding damage to the lower limb joints during rehabilitation training. Attached Figure Description

[0017] Figure 1 This is a three-dimensional representation of the linear displacement sensing component in this application. Figure 1 .

[0018] Figure 2 This is a front view of the linear displacement sensing component in this application.

[0019] Figure 3 yes Figure 2 A cross-sectional view at the position and direction shown in AA.

[0020] Figure 4 yes Figure 3 A magnified view of part I in the middle.

[0021] Figure 5 This is a three-dimensional representation of the linear displacement sensing component in this application. Figure 2 .

[0022] Figure 6 This is the three-dimensional representation of the present application. Figure 1 .

[0023] Figure 7 This is the three-dimensional representation of the present application. Figure 2 .

[0024] Figure 8 This is the three-dimensional representation of the present application. Figure 3 .

[0025] Figure 9 This is the three-dimensional representation of the present application. Figure 4 .

[0026] Figure 10 yes Figure 9 A magnified view of part II.

[0027] In the diagram: 1. Sliding sleeve; 2. Fixed upright plate; 3. Conductive column; 4. Pressing slider; 5. Slider inclined surface; 6. Conductive contact block; 7. Slider spring; 8. Sliding resistor layer; 9. Resistor groove; 10. Sleeve guide block; 11. Block guide hole; 12. Upright plate guide groove; 13. Conductive spring; 14. PCB board; 15. Slider push block; 16. Slider receiving groove; 17. Sleeve receiving cavity; 18. Top plate; 19. Horizontal slide bar; 20. Top tail plate; 21. Horizontal slide rail; 22. Limiting tail plate; 23. Slide base plate; 24. Slide base; 25. 26. Sliding block; 27. Top plate support seat; 28. Support seat connecting plate; 29. ​​Reset guide cylinder; 30. Pulley seat body; 31. Linear displacement sensing component; 32. Vertical linkage rod; 33. Linkage rod slide plate; 34. Support seat slide rail; 35. Support seat guide component; 36. Top first plate; 37. Moving connecting plate; 38. Moving pedal; 39. Wheel seat contact plate; 40. Connecting plate guide groove; 41. Linkage guide wheel; 42. Support seat guide hole; 43. Anti-collision plate; 44. Anti-collision rod; 45. Anti-collision connecting plate; 46. Support seat base plate; 47. Support plate upright plate. Detailed Implementation

[0028] The technical solutions described in this application will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] like Figures 1 to 5 As shown, a linear displacement sensing component includes a sliding sleeve 1 and a fixed plate 2. The sliding sleeve 1 forms a sleeve receiving cavity 17 to accommodate the fixed plate 2. The sliding sleeve 1 allows the fixed plate 2 to slide relative to the sliding sleeve 1 through the sleeve receiving cavity 17.

[0031] The fixed upright plate 2 has resistor grooves 9 machined on its front and rear sides, with the resistor grooves 9 on the same side of the fixed upright plate 2 symmetrically arranged. A sliding resistor layer 8 is embedded in the resistor groove 9. The sliding resistor layer 8 is in sliding contact with the conductive spring 13, and the sliding resistor layer 8 and the conductive spring 13 are respectively connected to the PCB board 14 through electrical signals. During the sliding engagement process, the sliding resistor layer 8 and the conductive spring 13 generate different resistance signals, and the PCB board 14 converts the different resistance signals into different voltage signals and outputs the voltage signals.

[0032] The voltage signal output by the PCB board 14 is transmitted to the controller. After receiving the voltage signal, the controller converts it into a corresponding number of times and displays it through a display device. The controller is a microcontroller.

[0033] The sliding sleeve 1 has sleeve guide blocks 10 integrally provided on both sides. The sleeve guide blocks 10 are machined with block guide holes 11. The fixed upright plate 2 has upright plate guide grooves 12 on both sides corresponding to the sleeve guide blocks 10. The sleeve guide blocks 10 slide in the upright plate guide grooves 12. The upright plate guide rod with a spring is provided in the upright plate guide groove 12. The upright plate guide rod is inserted into the block guide hole 11 and slides relative to the block guide hole 11. The spring is located between the bottom surface of the sliding sleeve 1 and the bottom surface of the upright plate guide groove 12.

[0034] In this embodiment, the sliding sleeve 1 can be sleeved on the fixed upright plate 2 and slide relative to the fixed upright plate 2. Stable longitudinal sliding and the force during the resetting process are achieved through the sleeve guide block 10, block guide hole 11, upright plate guide groove 12, upright plate guide rod, spring and other structures provided on both sides and cooperating with each other.

[0035] In this embodiment, the fixed upright plate 2 has pairs of resistor grooves 9 machined on its side. A sliding resistor layer 8 is disposed inside each resistor groove 9. A conductive spring piece 13 is disposed at the corresponding position of the sliding sleeve 1. Both the sliding resistor layer 8 and the conductive spring piece 13 are connected to the PCB board 14 via electrical signals. This allows the sliding sleeve 1 and the fixed upright plate 2 to slide relative to each other, thereby generating a changing input resistance value signal through the sliding resistor layer 8 and the conductive spring piece 13. A circuit is provided on the PCB board 14 to output a corresponding voltage value signal based on the changing resistance value signal. This voltage signal value is output to the controller, which outputs the voltage signal a corresponding number of times based on the received voltage signal and displays the output on a display screen.

[0036] In this embodiment, the PCB board 14 can be disposed in the inner wall of the sliding sleeve 1 and corresponding to the conductive spring 13, that is, disposed above the conductive spring 13.

[0037] Example 2

[0038] like Figures 1 to 5As shown, and based on Embodiment 1, a linear displacement sensing component is provided. The sliding sleeve 1 has several slider placement slots between adjacent resistor grooves 9 on both sides. These slots are distributed along the height of the sliding sleeve 1 and do not exceed the height of the sliding resistor layers 8 on both sides. A pressing slider 4, which moves relative to the sliding sleeve 1, is placed in each slider placement slot on the sliding sleeve 1. A slider spring 7 is provided between the pressing slider 4 and the slider placement slot, and the slider springs 7 are symmetrically arranged in the slider placement slots. Conductive contact blocks 6 are symmetrically arranged inside the slider placement slots. The pressing slider 4 is provided with a metal conductive plate that contacts the conductive contact block 6 and establishes an electrical connection between the two. The conductive contact block 6 is connected to a corresponding conductive post 3 via a wire. The conductive post 3 extends from the top of the sliding sleeve 1 and is connected to a corresponding PCB board 14 via a wire.

[0039] The top corner of the pressing slider 4 is provided with a slider inclined surface 5. The sliding sleeve 1 is machined with a slider receiving groove 16 on the side corresponding to the pressing slider 4, and a slider pushing block 15 is provided at the entrance of the slider receiving groove 16. The slider pushing block 15 can push the pressing slider 4 in through the slider inclined surface 5.

[0040] In this embodiment, the fixed plate 2 is provided with several sliding placement slots between adjacent resistor grooves 9. A pressing slider 4 is provided in the sliding placement slot and slides relative to it. The bottom surface of the pressing slider 4 has a metal conductive plate. The metal conductive plate can make the two conductive contact blocks 6 in the sliding placement slot electrically connected during the movement of the pressing slider 4, thereby connecting the adjacent conductive pillars 3. The conductive pillar 3 is a multi-segment fixed resistor structure. Different fixed resistors are connected through conductive contact blocks 6 of different heights, which can realize different fixed resistor values ​​output, so as to assist the sliding resistor layer 8 in realizing the monitoring of the amount of movement.

[0041] In this embodiment, the slider spring 7 enables the pressed slider 4 to reset within the sliding placement groove, and a slider pushing block 15 is provided inside the sliding sleeve 1 to cooperate with it. The slider pushing block 15 is located within the slider receiving groove 16. A slider inclined surface 5 is provided on the top surface of the pressed slider 4. When the slider pushing block 15 moves downward until it contacts the slider inclined surface 5, the slider pushing block 15 can achieve smooth contact with the end face of the pressed slider 4 through the slider inclined surface 5, and during the contact process, the pressed slider 4 is stably pushed into the sliding placement groove. When the slider pushing block 15 disengages from the pressed slider 4, the pressed slider 4 can reset under the action of the slider spring 7 and enter the slider receiving groove 16.

[0042] Example 3

[0043] like Figures 6 to 10As shown, and based on the aforementioned Embodiments 1 and 2, a joint rehabilitation training device equipped with the linear displacement sensing component includes a top plate 18 horizontally arranged with the base. The top plate 18 has a rectangular notch, and the top plate 18 is connected to the base through a top plate support 26. A support plate connecting plate 27 is fixedly connected between adjacent top plate support 26.

[0044] The top surface of the top plate 18 is slidably provided with a slide block 24. A pair of movable connecting plates 36 are provided below the rectangular notch of the top plate 18. A movable pedal 37 is provided above the movable connecting plate 36. The movable pedal 37 is fixed to the movable connecting plate 36 after adjusting its own position on the movable connecting plate 36 by fastening bolts.

[0045] Both ends of the movable connecting plate 36 extend into the corresponding top plate support 26 and move relative to the top plate support 26 within the top plate support 26. The top plate support 26 contacts the vertical linkage rod 31 in the top plate support 26, and both ends of the vertical linkage rod 31 are respectively connected to linkage rod slide plates 32, which are connected to the support base guide assembly 34.

[0046] Below the movable connecting plate 36 is a pulley seat 29 that slides in contact with it. Below the pulley seat 29 is a linear displacement sensing component 30. The linear displacement sensing component 30 is connected to the pulley seat 29 through its internal sliding sleeve 1. The fixed upright plate 2 is connected to the support base connecting plate 27.

[0047] In this embodiment, the top plate 18 can support and slide the slide seat 24, and has a rectangular notch to allow the lower limb joint to contact the moving pedal 37.

[0048] In this embodiment, the top plate 18 is arranged parallel to the horizontal plane and is connected to the base on the horizontal plane through the top plate support 26 near both ends, thereby further improving its stability and reliability.

[0049] In this embodiment, a support base connecting plate 27 is provided between the top plate support bases 26. The support base connecting plate 27 can improve the stability of the top plate support bases 26, and can also connect the linear displacement sensing component 30 and the reset guide cylinder 28.

[0050] In this embodiment, the top plate 18 is also provided with a pair of movable connecting plates 36 below the rectangular notch. The movable connecting plates 36 can move under the action of the movable pedal 37. The movable connecting plates 36 are long strip-shaped T-shaped plates, and both ends of the movable connecting plates 36 extend into the top plate support seats 26 at corresponding positions. Under the action of the limiting and resetting mechanism of the top plate support seats 26, they achieve the purpose of following the movement of the lower limb joints.

[0051] In this embodiment, the top plate support 26 is provided with a vertical linkage rod 31 that moves with the movable connecting plate 36. Both ends of the vertical linkage rod 31 are provided with linkage rod slide plates 32 that are fixedly connected. The linkage rod slide plates 32 can cooperate with the support guide assembly 34 to provide resistance to downward movement, and can also provide force during the reset process of the linkage rod slide plates 32, and can transmit the above force to the movable connecting plate 36.

[0052] In this embodiment, a pulley seat 29 is slidably contacted below the movable connecting plate 36. The pulley seat 29 can follow the movement of the movable connecting plate 36 and convert it into its own up-and-down movement. It can also transmit the up-and-down movement to the linear displacement sensing component 30. The linear displacement sensing component 30 is connected to the pulley seat 29 through the sliding sleeve 1 at the top. The sliding sleeve 1 can achieve vertical movement relative to the fixed upright plate 2 under the action of the pulley seat 29.

[0053] Example 4

[0054] like Figures 6 to 10 As shown, and based on the aforementioned embodiments 1, 2, and 3, a joint rehabilitation training device equipped with the aforementioned linear displacement sensing component is provided. The top plate 18 has a top first plate 35 and a top tail plate 20 at its two ends. Horizontal slide rods 19 and horizontal slide rails 21 are respectively provided at both ends of the top first plate 35 and the top tail plate 20. The top plate 18 is slidably connected to a slide base 24 via the horizontal slide rods 19 and the horizontal slide rails 21. A slide base backing plate 23 is provided on the slide base 24.

[0055] The top plate support 26 includes a support base plate 45 connected to a horizontal base. Four support plate uprights 46 are vertically fixedly connected to the support base plate 45. A space is formed between every two support plate uprights 46 to accommodate the two ends of the movable connecting plate 36 and to slide in contact with the movable connecting plate 36.

[0056] The bottom end of the movable connecting plate 36 is integrally provided with a connecting plate guide groove 39 extending along the length direction of the movable connecting plate 36. The connecting plate guide groove 39 is slidably connected to the connecting rod guide wheel 40, and the connecting rod guide wheel 40 is located on the vertical linkage rod 31.

[0057] The two ends of the vertical linkage rod 31 are integrally connected to the linkage rod slide plate 32. The linkage rod slide plate 32 and the vertical linkage rod 31 are machined with through holes for the guide slide rod to slide. A guide return spring is sleeved on the guide slide rod, located between the linkage rod slide plate 32 and the support base plate 45, and connected to both. The guide slide rod and the guide return spring constitute the support base guide assembly 34 described in this application. The two ends of the linkage rod slide plate 32 are slidably mounted on the support base slide rail 33. The vertical linkage rod 31 is located within the support base guide hole 41, which is located on the support plate upright plate 46.

[0058] In this embodiment, the top first plate 35 and the top tail plate 20 are used to fix the horizontal slide rail 21 and the horizontal slide rod 19, and the slide block 24 can be stably slidable through the above-mentioned fixing structure. In this embodiment, the slide block 24 can slide relative to the top plate 18 through the above structure to achieve its own position adjustment and meet the usage needs of users of different body types. After adjustment, the slide block 24 can be fixed to the horizontal slide rail 21 and / or the horizontal slide rod 19 through fasteners.

[0059] In this embodiment, the top plate support 26 includes a support base plate 45 connected to the horizontal base by a bolt assembly. A support plate upright plate 46 is vertically fixedly connected to the support base plate 45. The support plate upright plate 46 consists of four rectangular plates, and every two support plate upright plates 46 form a space to accommodate the movable connecting plate 36. The movable connecting plate 36 is confined within the space by the two support plate upright plates 46.

[0060] In this embodiment, each of the support plate uprights 46 is machined with a support seat guide hole 41. The support seat guide hole 41 is a vertical strip-shaped through hole. A vertical linkage rod 31 is arranged inside the support seat guide hole 41. The vertical linkage rod 31 is correspondingly arranged with the movable connecting plate 36, and both ends of the vertical linkage rod 31 extend from both ends of the two support plate uprights 46 respectively, and are respectively connected to the linkage rod slide plate 32 at the corresponding positions. The above structure can satisfy the stable movement of the vertical linkage rod 31.

[0061] In this embodiment, the support base guide assembly 34 includes guide slide rods fixedly connected at both ends to the support base base plate 45 and top plate 18. A vertical linkage rod 31 and a linkage rod slide plate 32 are slidably mounted on the guide slide rods. A guide return spring is sleeved on the guide slide rod between the linkage rod slide plate 32 and the support base base plate 45. To ensure the stability of the linkage rod slide plate 32's movement, a support base slide rail 33 can be used. The support base slide rail 33 is located on both sides of the support base guide hole 41 and fixedly connected to the support plate upright plate 46.

[0062] In this embodiment, the vertical linkage rod 31 can be independently set according to the two supporting upright plates 46, or the same vertical linkage rod 31 can be set in the top plate support seat 26 to realize the synchronous downward and synchronous upward movement of the two moving linkage plates 36 (see the attached drawings of this application). Figures 6 to 10 The structure shown is set up according to the type of exercise the patient actually needs.

[0063] In this embodiment, the movable connecting plate 36 is a T-shaped structure plate, which can achieve stable sliding with the connecting rod guide wheel 40 through the connecting plate guide groove 39. Furthermore, due to the limiting effect of the support plate upright plate 46, the movable connecting plate 36 and the top plate support seat 26 achieve stable movement. Simultaneously, since the connecting rod guide wheel 40 is mounted on the vertical linkage rod 31, the vertical linkage rod 31 can achieve stable lifting and lowering within the support seat guide hole 41 through the connecting plate guide groove 39 and the connecting rod guide wheel 40.

[0064] Example 5

[0065] like Figures 6 to 10 As shown, and based on the aforementioned embodiments 1 to 4, a joint rehabilitation training device equipped with the aforementioned linear displacement sensing component is provided. A wheel seat contact plate 38 is provided below the movable connecting plate 36. Sufficient movement gaps are left between the two ends of the wheel seat contact plate 38 and the corresponding top plate support seat 26. An anti-collision connecting plate 44 is fixedly connected to the end of the wheel seat contact plate 38 in the forward movement direction. An anti-collision rod 43 is connected to the anti-collision rod 43 through a threaded structure and a nut structure. An anti-collision plate 42 is fixedly connected to the end of the anti-collision rod 43 away from the anti-collision connecting plate 44. The anti-collision plate 42 is flush with the end face of the corresponding top plate support seat 26.

[0066] The pulley seat 29 includes a seat and a rotating wheel. The rotating wheel is rotatably connected to the seat via a shaft. A reset guide cylinder 28 is connected to the bottom of the pulley seat 29. The reset guide cylinder 28 includes a cylinder body. A reset spring and a cylinder push rod are provided inside the cylinder body. One end of the cylinder push rod is inserted into the inside of the cylinder body and connected to the reset spring. The other end of the cylinder push rod is connected to the pulley seat 29.

[0067] The bottom of the tail end of the top plate 18 is fixedly connected to a limiting tail plate 22.

[0068] In this embodiment, a wheel seat contact plate 38 is provided below the movable connecting plate 36. The wheel seat contact plate 38 can be fixedly connected to the movable connecting plate 36 by a fastening bolt assembly and its position can be adjusted relative to the movable connecting plate 36.

[0069] In this embodiment, there is a sufficient gap between the two ends of the wheel seat contact plate 38 and the corresponding top plate support seat 26, that is, between the end face of the support plate upright plate 46 and the moving connecting plate 36. The gap is sufficient to allow the moving connecting plate 36 to follow the moving pedal 37 for a certain distance.

[0070] In this embodiment, the wheel seat contact plate 38 is fixedly provided with an anti-collision connecting plate 44 at its end in the forward direction. The anti-collision connecting plate 44 is arranged parallel to the anti-collision plate 42. The anti-collision connecting plate 44 and the anti-collision plate 42 are connected by an anti-collision rod 43, and the anti-collision rod 43 and the anti-collision connecting plate 44 are connected by a threaded structure and a nut structure to realize the adjustment of the anti-collision rod 43 and the anti-collision plate 42.

[0071] The above structure enables adjustment of the movement distance of the movable connecting plate 36, meeting the usage needs of people of different body types.

[0072] The usage process of this application is as follows: Before use, the user needs to adjust the position of the slide block 24 relative to the top plate 18. After the slide block 24 slides along the horizontal slide bar 19 and the slide block slider 25 slides along the horizontal slide rail 21 to a suitable position, the position is fixed by the fasteners at the above positions.

[0073] The patient sits on the slide seat 24 and is able to contact the slide seat backrest 23 with their back. The patient's lower limbs extend downward through the rectangular notch in the top plate 18 and place their feet on the movable pedal 37.

[0074] After the above process is completed, the patient steps on the moving pedal 37 with his foot. The moving pedal 37 will drive the moving connecting plate 36 to move forward and backward in the length direction of the moving connecting plate 36, and at the same time reciprocate in the height direction of the top plate support seat 26.

[0075] During the relative movement between the movable connecting plate 36 and the top plate support 26, the movable connecting plate 36 can achieve its own limiting under the action of the two support plate uprights 46. Furthermore, through the connecting plate guide groove 39 at the bottom of the movable connecting plate 36 and the connecting rod guide wheel 40, stable movement of the movable connecting plate 36 in the length direction and stable movement in the height direction of the support plate uprights 46 are achieved. When the movable connecting plate 36 acts on the connecting rod guide wheel 40 through the connecting plate guide groove 39, the connecting rod guide wheel 40 can transmit the force to the corresponding vertical linkage rod 31. The vertical linkage rod 31 can move along the support base guide hole 41 under the limiting action of the support base guide hole 41. During the downward movement, the vertical linkage rod 31 drives the linkage rod slide plate 32. As the linkage rod slide plate 32 moves downward along the support base slide rail 33 and the support base guide assembly 34, it compresses the guide return spring in the support base guide assembly 34. When the force of the movable connecting plate 36 decreases, the above structure returns to its original position.

[0076] During the above process, the movable connecting plate 36 can transmit the force to the lower pulley seat 29 through the lower wheel seat contact plate 38. Since the pulley seat 29 contacts the wheel seat contact plate 38 through the rotating wheel, the pulley seat 29 does not hinder the movement of the wheel seat contact plate 38 and the movable connecting plate 36 in the length direction, and can also transmit the descending distance of the movable connecting plate 36 and the wheel seat contact plate 38 in the height direction to the linear displacement sensing component 30. Under the action of the reset guide cylinders 28 arranged obliquely on both sides, the pulley seat 29 can stably follow the movement of the wheel seat contact plate 38 and the movable connecting plate 36, ensuring that the pulley seat 29 transmits the force to the linear displacement sensing component 30 in a timely manner.

[0077] During the above process, since the two ends of the movable connecting plate 36 are limited between their respective paired support plates 46, the reset position of the movable connecting plate 36 still needs to be limited during the non-stepping reset process. Therefore, a limiting tail plate 22 needs to be set at the tail of the top plate 18. The limiting tail plate 22 is located below the top plate 18 to prevent the movable connecting plate 36 from detaching from the front top plate support seat 26 during the reset process.

[0078] In the above process, to limit the movement distance of the movable connecting plate 36, it can be adjusted using the anti-collision connecting plate 44, anti-collision rod 43, and anti-collision plate 42. Since the anti-collision plate 42 faces the top plate support 26 in the forward direction, the movement distance of the movable connecting plate 36 can be adjusted by the distance between the anti-collision plate 42 and the top plate support 26. If the above structure is not provided, the movement distance of the movable connecting plate 36 can also be limited by the wheel seat contact plate 38 on the movable connecting plate 36, that is, the movement distance is achieved by the distance between the end face of the wheel seat contact plate 38 and the end face of the top plate support 26.

[0079] In the above process, the linear displacement sensing component 30 includes a sliding sleeve 1 and a fixed plate 2. The sliding sleeve 1 is connected to the pulley seat 29 and moves with the lifting and lowering movement of the pulley seat 29. The fixed plate 2 is fixed to the support base connecting plate 27 at the bottom.

[0080] In the above process, the relative movement between the sliding sleeve 1 and the fixed plate 2 enables the sliding of the sliding resistor layer 8 and the conductive spring 13. The relative sliding of the conductive spring 13 and the sliding resistor layer 8 enables the signal of resistance value change at the input end of the PCB board 14. The circuit on the PCB board 14 converts the changing resistance signal into a changing voltage signal and outputs the voltage signal to the controller.

[0081] During the above process, due to the relative movement between the sliding sleeve 1 and the fixed vertical plate 2, the slider pushing block 15 and the slider receiving groove 16 move downward along with the sliding sleeve 1. During the downward movement, the slider pushing block 15 can push the corresponding pressing slider 4 inward through the slider inclined surface 5. The inward pushing of the pressing slider 4 can realize the connection of the conductive contact blocks 6 on both sides. The connection of the conductive contact blocks 6 can realize the connection of different fixed resistance structures in the conductive column 3, and then realize the connection of different fixed resistance values ​​at different heights, so as to assist the sliding resistance layer 8 and the conductive spring 13 in realizing the auxiliary monitoring of the vertical movement.

[0082] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A linear displacement sensing assembly, comprising a sliding sleeve (1) and a fixed plate (2), wherein the sliding sleeve (1) is provided with a sleeve receiving cavity (17) for the fixed plate (2) to be inserted into and slide relative to it, characterized in that: The fixed upright plate (2) is symmetrically provided with resistor grooves (9) on both sides. A sliding resistor layer (8) is embedded in the resistor groove (9). A conductive spring (13) is provided on the sliding sleeve (1) at the position corresponding to the sliding resistor layer (8). The conductive spring (13) is connected to the PCB board (14) through an electrical signal. The PCB board (14) is connected to the controller through an electrical signal. The conductive spring (13) is located at the bottom end of the sliding sleeve (1). Sleeve guide blocks (10) are provided on both sides of the sliding sleeve (1). The fixed upright plate (2) is provided with upright plate guide grooves (12) on both sides corresponding to the sleeve guide blocks (10). An upright plate guide rod with a spring is provided in the upright plate guide groove (12). A block guide hole (11) corresponding to the upright plate guide rod is machined on the sleeve guide block (10). The block guide hole (11) is inserted into the upright plate guide rod and slides relative to it.

2. The linear displacement sensor assembly according to claim 1, characterized in that: The fixed plate (2) has several slider placement slots between adjacent resistor slots (9) on the same side. A pressing slider (4) is placed in the slider placement slot. Two conductive contact blocks (6) and a slider spring (7) are provided between the pressing slider (4) and the slider placement slot. The pressing slider (4) has a metal conductive plate that connects the two conductive contact blocks (6). The conductive contact blocks (6) are connected to the corresponding conductive pillars (3) by wires. The top of the conductive pillar (3) extends from the top of the fixed plate (2). The conductive pillar (3) is connected to the PCB board (14) by an electrical signal. The conductive pillar (3) is composed of multiple fixed resistor structures connected in series.

3. The linear displacement sensor assembly according to claim 2, characterized in that: The pressing slider (4) is machined with a slider inclined surface (5). The pressing slider (4) cooperates with the slider pushing block (15) through the slider inclined surface (5). The slider pushing block (15) is located at the inlet end of the slider receiving groove (16). The slider receiving groove (16) is located on the sliding sleeve (1) and is correspondingly set with the pressing slider (4).

4. A joint rehabilitation training device equipped with a linear displacement sensing component according to any one of claims 1 to 3, comprising a pair of top plate support seats (26), a support seat connecting plate (27) between adjacent top plate support seats (26), and a top plate (18) arranged parallel to the support seat connecting plate (27) connected to the top of the top plate support seat (26), characterized in that: The top plate (18) is provided with a sliding seat (24) that slides relative to each other. The top plate (18) has a rectangular notch in the sliding direction of the sliding seat (24). A movable pedal (37) is provided below the rectangular notch. The movable pedal (37) is located on a movable connecting plate (36). The two ends of the movable connecting plate (36) are respectively slidably disposed in the top plate support (26). The top plate support (26) is provided with a vertical linkage rod (31) that slides in contact with the two ends of the movable connecting plate (36). The vertical linkage rod (31) is located on the linkage rod slide plate (32). The linkage rod slide plate (32) is connected to the support seat guide assembly (34). The bottom end of the movable connecting plate (36) is provided with a sliding pulley seat (29). The pulley seat (29) is located at the top of the linear displacement sensing assembly (30). The bottom end of the linear displacement sensing assembly (30) is located on the support seat connecting plate (27).

5. A joint rehabilitation training device equipped with a linear displacement sensing component according to claim 4, characterized in that: The bottom end of the movable connecting plate (36) is fixedly provided with a wheel seat contact plate (38). The length of the wheel seat contact plate (38) is lower than that of the movable connecting plate (36) and there is a distance between it and the top plate support seat (26) at both ends for the movable connecting plate (36) to move. The movable connecting plate (36) slides in contact with the pulley seat body (29) through the wheel seat contact plate (38). The pulley seat body (29) includes a wheel and a seat body.

6. A joint rehabilitation training device equipped with a linear displacement sensing component according to claim 5, characterized in that: The linear displacement sensing component (30) has a reset guide cylinder (28) on the support base connecting plate (27) on both sides. The reset guide cylinder (28) includes a cylinder body, a reset spring and a cylinder push rod are provided inside the cylinder body. One end of the cylinder push rod is inserted into the inside of the cylinder body and connected to the reset spring. The other end of the cylinder push rod is connected to the pulley seat body (29).

7. A joint rehabilitation training device equipped with a linear displacement sensing component according to claim 5, characterized in that: The wheel seat contact plate (38) is fixedly connected to a collision protection plate (44) at one end in the forward direction. The collision protection plate (44) is connected to a collision protection rod (43) through a nut structure. The collision protection rod (43) extends away from the wheel seat contact plate (38) and is fixedly connected to a collision protection plate (42). The top plate (18) is provided with a limit tail plate (22) below the tail.

8. A joint rehabilitation training device equipped with a linear displacement sensing component according to claim 5, characterized in that: The top plate support (26) includes a support base plate (45), on which four support plate uprights (46) are provided. The support plate uprights (46) are located on both sides of the movable connecting plate (36) and are in sliding contact with the movable connecting plate (36). The support plate uprights (46) are machined with support guide holes (41) formed by strip-shaped through holes. A vertical linkage rod (31) is slidably arranged in the support guide hole (41). The two ends of the vertical linkage rod (31) extend from the support guide hole (41). The vertical linkage rod (31) extends out and connects to the linkage rod slide plate (32). The vertical linkage rod (31) and the linkage rod slide plate (32) are slidably provided with guide slide rods. A guide return spring is sleeved on the guide slide rod between the linkage rod slide plate (32) and the support base plate (45). The guide return spring and the guide slide rod constitute the support base guide assembly (34). The two sides of the linkage rod slide plate (32) are slidably arranged on the support base slide rail (33). The support base slide rail (33) is located on both sides of the support base guide hole (41) of the support plate upright plate (46).

9. A joint rehabilitation training device equipped with a linear displacement sensing component according to claim 5, characterized in that: The slide block (24) is slidably provided with horizontal slide rods (19) on both sides. A slide block slider (25) is provided at the slide block (24) outside the horizontal slide rods (19). The slide block (24) is slidably provided on the horizontal slide rail (21) through the slide block slider (25). The two ends of the horizontal slide rods (19) and the horizontal slide rail (21) are respectively fixedly connected to the top first plate (35) and the top tail plate (20) at the corresponding positions. A slide block back plate (23) is provided on the slide block (24).

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